This document discusses the concept of inertia through examples like a coin falling into a tumbler, a passenger on a moving bus, and why seatbelts are important. It defines inertia as the tendency of objects at rest to remain at rest, and of objects in motion to stay in motion, due to their resistance to change. The document suggests mass is related to inertia and poses discussion questions about these examples.

1. PRESENTED BY
RENJINI R
PHYSICAL SCIENCE
MAET TRAINING
COLLEGE,NETTAYAM

5. DISCUSSION POINTS
 What did you see in the above
pictures?
 Is the coin at rest or in motion
before hitting?
 What may be the reason for the
coin to fall into the tumbler?

6. Inertia of Rest

7. DISCUSSION POINTS
Is the passenger in a
stationary bus is at rest or in
motion?
What happens when a
stationary bus suddenly
moves forward?

8. Inertia of Motion

9. DISCUSSION POINTS
• Is the passenger inside a running bus
or a car in motion or at rest?
• Can you say why seatbelts are made
compulsory to those who are seated in
front of a car?
• What will happen to a passenger when
a running bus stops all of a sudden?
• What may be the reason?

10. INERTIA
• The tendency of an object at rest to stay at rest; and
the tendency of an object in motion to stay in motion
(in a straight line).
Inertia is resistance to change

11. •“If an elephant chases you, you
should run zig zag”.Have you
heard like this before?
Why do they say so? What may
be the reason?
Is mass related to Inertia?

13. APPLICATION
•What happen to the
passengers travelling in a
bus, when the bus takes a
sharp turn?